./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f1d7dc9d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 13:10:35,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:10:35,167 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:10:35,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:10:35,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:10:35,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:10:35,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:10:35,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:10:35,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:10:35,199 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:10:35,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:10:35,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:10:35,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:10:35,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:10:35,204 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:10:35,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:10:35,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:10:35,205 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:10:35,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:10:35,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:10:35,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:10:35,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:10:35,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:10:35,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:10:35,208 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:10:35,208 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:10:35,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:10:35,208 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:10:35,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:10:35,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:10:35,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:10:35,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:10:35,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:10:35,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:10:35,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:10:35,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:10:35,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:10:35,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:10:35,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:10:35,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:10:35,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:10:35,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:10:35,213 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 13:10:35,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:10:35,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:10:35,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:10:35,484 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:10:35,484 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:10:35,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-20 13:10:36,838 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:10:37,004 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:10:37,004 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-20 13:10:37,012 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/52f494088/cff5c1da7b474d2db3e39467d0124cfb/FLAG5d015fd13 [2024-09-20 13:10:37,403 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/52f494088/cff5c1da7b474d2db3e39467d0124cfb [2024-09-20 13:10:37,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:10:37,407 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 13:10:37,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:10:37,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:10:37,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:10:37,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34285a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37, skipping insertion in model container [2024-09-20 13:10:37,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:10:37,575 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-09-20 13:10:37,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:10:37,587 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 13:10:37,602 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-09-20 13:10:37,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:10:37,621 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:10:37,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37 WrapperNode [2024-09-20 13:10:37,622 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:10:37,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:10:37,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:10:37,624 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:10:37,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,645 INFO L138 Inliner]: procedures = 13, calls = 29, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 13:10:37,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:10:37,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:10:37,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:10:37,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:10:37,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,708 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1]. The 4 writes are split as follows [0, 2, 2]. [2024-09-20 13:10:37,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:10:37,727 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:10:37,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:10:37,727 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:10:37,729 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (1/1) ... [2024-09-20 13:10:37,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:10:37,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:10:37,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 13:10:37,761 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 13:10:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:10:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 13:10:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 13:10:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 13:10:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-20 13:10:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-20 13:10:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-20 13:10:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-20 13:10:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-20 13:10:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-20 13:10:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 13:10:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 13:10:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-09-20 13:10:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-09-20 13:10:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:10:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:10:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-20 13:10:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-20 13:10:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-20 13:10:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-09-20 13:10:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-09-20 13:10:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-20 13:10:37,883 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:10:37,885 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:10:38,023 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-20 13:10:38,023 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:10:38,048 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:10:38,048 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-20 13:10:38,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:10:38 BoogieIcfgContainer [2024-09-20 13:10:38,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:10:38,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:10:38,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:10:38,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:10:38,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:10:37" (1/3) ... [2024-09-20 13:10:38,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee27475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:10:38, skipping insertion in model container [2024-09-20 13:10:38,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:10:37" (2/3) ... [2024-09-20 13:10:38,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee27475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:10:38, skipping insertion in model container [2024-09-20 13:10:38,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:10:38" (3/3) ... [2024-09-20 13:10:38,057 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-09-20 13:10:38,073 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:10:38,073 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 13:10:38,126 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:10:38,132 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@778f23f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:10:38,132 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 13:10:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:10:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-20 13:10:38,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:10:38,142 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:10:38,142 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:10:38,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:38,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1880927793, now seen corresponding path program 1 times [2024-09-20 13:10:38,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:10:38,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574980578] [2024-09-20 13:10:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:10:38,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:10:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:38,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:10:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:38,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:10:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:10:38,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:10:38,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574980578] [2024-09-20 13:10:38,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574980578] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:10:38,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:10:38,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-20 13:10:38,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435924683] [2024-09-20 13:10:38,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:10:38,738 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 13:10:38,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:10:38,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 13:10:38,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:10:38,759 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:10:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:10:38,923 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-20 13:10:38,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:10:38,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-20 13:10:38,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:10:38,933 INFO L225 Difference]: With dead ends: 40 [2024-09-20 13:10:38,933 INFO L226 Difference]: Without dead ends: 27 [2024-09-20 13:10:38,948 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:10:38,952 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:10:38,953 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 63 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:10:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-20 13:10:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-09-20 13:10:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-20 13:10:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-09-20 13:10:39,021 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2024-09-20 13:10:39,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:10:39,023 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-09-20 13:10:39,024 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:10:39,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-09-20 13:10:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-20 13:10:39,026 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:10:39,026 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:10:39,026 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:10:39,028 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:10:39,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash 259605890, now seen corresponding path program 1 times [2024-09-20 13:10:39,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:10:39,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883133597] [2024-09-20 13:10:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:10:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:10:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:39,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:10:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:39,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:10:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:39,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:39,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-20 13:10:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-20 13:10:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:10:39,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883133597] [2024-09-20 13:10:39,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883133597] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:10:39,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:10:39,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-20 13:10:39,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257096418] [2024-09-20 13:10:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:10:39,325 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 13:10:39,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:10:39,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 13:10:39,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:10:39,326 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-20 13:10:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:10:39,456 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-09-20 13:10:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 13:10:39,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2024-09-20 13:10:39,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:10:39,458 INFO L225 Difference]: With dead ends: 46 [2024-09-20 13:10:39,458 INFO L226 Difference]: Without dead ends: 27 [2024-09-20 13:10:39,459 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-20 13:10:39,460 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:10:39,462 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:10:39,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-20 13:10:39,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-20 13:10:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-20 13:10:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-20 13:10:39,472 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 25 [2024-09-20 13:10:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:10:39,473 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-20 13:10:39,473 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-20 13:10:39,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-20 13:10:39,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-20 13:10:39,476 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:10:39,477 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:10:39,477 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 13:10:39,477 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:10:39,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:39,478 INFO L85 PathProgramCache]: Analyzing trace with hash 889705653, now seen corresponding path program 1 times [2024-09-20 13:10:39,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:10:39,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480283041] [2024-09-20 13:10:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:10:39,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:10:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:39,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:10:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:39,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:10:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:39,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:39,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:40,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 13:10:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:10:40,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:10:40,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480283041] [2024-09-20 13:10:40,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480283041] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:10:40,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361564197] [2024-09-20 13:10:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:10:40,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:10:40,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:10:40,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:10:40,036 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:10:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:40,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-20 13:10:40,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:10:40,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-20 13:10:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-20 13:10:40,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:10:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:10:40,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361564197] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:10:40,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:10:40,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 25 [2024-09-20 13:10:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695109112] [2024-09-20 13:10:40,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:10:40,870 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 13:10:40,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:10:40,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 13:10:40,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-20 13:10:40,872 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 25 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-20 13:10:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:10:41,295 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2024-09-20 13:10:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 13:10:41,296 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) Word has length 30 [2024-09-20 13:10:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:10:41,298 INFO L225 Difference]: With dead ends: 52 [2024-09-20 13:10:41,298 INFO L226 Difference]: Without dead ends: 31 [2024-09-20 13:10:41,299 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 13:10:41,300 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:10:41,300 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:10:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-20 13:10:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-20 13:10:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-20 13:10:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-09-20 13:10:41,309 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 30 [2024-09-20 13:10:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:10:41,309 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-09-20 13:10:41,310 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-20 13:10:41,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-09-20 13:10:41,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-20 13:10:41,311 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:10:41,312 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:10:41,328 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 13:10:41,515 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:10:41,516 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:10:41,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:41,516 INFO L85 PathProgramCache]: Analyzing trace with hash 282472211, now seen corresponding path program 2 times [2024-09-20 13:10:41,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:10:41,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387824320] [2024-09-20 13:10:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:10:41,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:10:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:41,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:10:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:41,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:10:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:42,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:42,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:42,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:42,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 13:10:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:42,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:42,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:42,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:42,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 13:10:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-20 13:10:42,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:10:42,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387824320] [2024-09-20 13:10:42,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387824320] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:10:42,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109268771] [2024-09-20 13:10:42,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:10:42,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:10:42,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:10:42,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:10:42,360 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:10:42,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:10:42,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:10:42,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-20 13:10:42,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:10:42,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-20 13:10:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-20 13:10:42,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:10:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 56 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-20 13:10:43,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109268771] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:10:43,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:10:43,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 14] total 29 [2024-09-20 13:10:43,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434545827] [2024-09-20 13:10:43,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:10:43,669 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-20 13:10:43,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:10:43,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-20 13:10:43,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2024-09-20 13:10:43,671 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 29 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 24 states have internal predecessors, (51), 9 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (18), 7 states have call predecessors, (18), 9 states have call successors, (18) [2024-09-20 13:10:43,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:10:43,952 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2024-09-20 13:10:43,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 13:10:43,954 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 24 states have internal predecessors, (51), 9 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (18), 7 states have call predecessors, (18), 9 states have call successors, (18) Word has length 56 [2024-09-20 13:10:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:10:43,955 INFO L225 Difference]: With dead ends: 60 [2024-09-20 13:10:43,955 INFO L226 Difference]: Without dead ends: 35 [2024-09-20 13:10:43,956 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 13:10:43,956 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:10:43,957 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 129 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:10:43,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-20 13:10:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-20 13:10:43,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 9 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2024-09-20 13:10:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-20 13:10:43,975 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2024-09-20 13:10:43,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:10:43,976 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-20 13:10:43,976 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 24 states have internal predecessors, (51), 9 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (18), 7 states have call predecessors, (18), 9 states have call successors, (18) [2024-09-20 13:10:43,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:43,978 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-20 13:10:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-20 13:10:43,980 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:10:43,981 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:10:43,997 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 13:10:44,181 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:10:44,181 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:10:44,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:44,182 INFO L85 PathProgramCache]: Analyzing trace with hash -209044141, now seen corresponding path program 3 times [2024-09-20 13:10:44,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:10:44,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541265760] [2024-09-20 13:10:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:10:44,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:10:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:44,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:10:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:44,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:10:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 13:10:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 13:10:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 10 proven. 118 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-09-20 13:10:45,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:10:45,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541265760] [2024-09-20 13:10:45,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541265760] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:10:45,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265164910] [2024-09-20 13:10:45,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:10:45,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:10:45,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:10:45,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:10:45,803 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:10:45,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-20 13:10:45,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:10:45,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-20 13:10:45,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:10:45,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-20 13:10:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-09-20 13:10:46,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:10:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-09-20 13:10:47,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265164910] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:10:47,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:10:47,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 14] total 35 [2024-09-20 13:10:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892454875] [2024-09-20 13:10:47,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:10:47,079 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-20 13:10:47,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:10:47,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-20 13:10:47,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1031, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 13:10:47,080 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 35 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 29 states have internal predecessors, (51), 13 states have call successors, (19), 7 states have call predecessors, (19), 13 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-20 13:10:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:10:47,545 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2024-09-20 13:10:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 13:10:47,546 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 29 states have internal predecessors, (51), 13 states have call successors, (19), 7 states have call predecessors, (19), 13 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) Word has length 76 [2024-09-20 13:10:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:10:47,547 INFO L225 Difference]: With dead ends: 68 [2024-09-20 13:10:47,547 INFO L226 Difference]: Without dead ends: 39 [2024-09-20 13:10:47,549 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=319, Invalid=1843, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 13:10:47,550 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 58 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:10:47,550 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 116 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:10:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-20 13:10:47,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-20 13:10:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (13), 11 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-20 13:10:47,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-20 13:10:47,559 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 76 [2024-09-20 13:10:47,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:10:47,559 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-20 13:10:47,560 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 29 states have internal predecessors, (51), 13 states have call successors, (19), 7 states have call predecessors, (19), 13 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-20 13:10:47,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-20 13:10:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-09-20 13:10:47,562 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:10:47,562 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:10:47,581 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 13:10:47,766 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:10:47,767 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:10:47,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:47,767 INFO L85 PathProgramCache]: Analyzing trace with hash -313301423, now seen corresponding path program 4 times [2024-09-20 13:10:47,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:10:47,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662179654] [2024-09-20 13:10:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:10:47,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:10:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:48,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:10:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:48,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:10:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:49,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:49,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:49,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:49,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:49,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:49,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 13:10:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 13:10:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 13:10:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 14 proven. 307 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2024-09-20 13:10:50,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:10:50,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662179654] [2024-09-20 13:10:50,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662179654] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:10:50,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644593054] [2024-09-20 13:10:50,120 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 13:10:50,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:10:50,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:10:50,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:10:50,124 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:10:50,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 13:10:50,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:10:50,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-09-20 13:10:50,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:10:50,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-20 13:10:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 346 proven. 35 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-20 13:10:50,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:10:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 6 proven. 414 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-09-20 13:10:53,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644593054] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:10:53,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:10:53,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 26] total 44 [2024-09-20 13:10:53,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247472926] [2024-09-20 13:10:53,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:10:53,409 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-20 13:10:53,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:10:53,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-20 13:10:53,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 13:10:53,411 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 44 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 36 states have internal predecessors, (63), 12 states have call successors, (25), 10 states have call predecessors, (25), 15 states have return successors, (27), 13 states have call predecessors, (27), 12 states have call successors, (27) [2024-09-20 13:10:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:10:53,829 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2024-09-20 13:10:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 13:10:53,829 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 36 states have internal predecessors, (63), 12 states have call successors, (25), 10 states have call predecessors, (25), 15 states have return successors, (27), 13 states have call predecessors, (27), 12 states have call successors, (27) Word has length 122 [2024-09-20 13:10:53,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:10:53,831 INFO L225 Difference]: With dead ends: 74 [2024-09-20 13:10:53,833 INFO L226 Difference]: Without dead ends: 41 [2024-09-20 13:10:53,834 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 257 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=564, Invalid=2088, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 13:10:53,836 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:10:53,836 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 215 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:10:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-20 13:10:53,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-20 13:10:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 12 states have return successors, (14), 12 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-20 13:10:53,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-09-20 13:10:53,849 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 122 [2024-09-20 13:10:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:10:53,849 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-09-20 13:10:53,849 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 36 states have internal predecessors, (63), 12 states have call successors, (25), 10 states have call predecessors, (25), 15 states have return successors, (27), 13 states have call predecessors, (27), 12 states have call successors, (27) [2024-09-20 13:10:53,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:53,851 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-09-20 13:10:53,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-20 13:10:53,852 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:10:53,852 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 18, 18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:10:53,868 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 13:10:54,052 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:10:54,053 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:10:54,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1126624914, now seen corresponding path program 5 times [2024-09-20 13:10:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:10:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608628545] [2024-09-20 13:10:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:10:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:10:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:54,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:10:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:54,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:10:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:10:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:10:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:55,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:10:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2024-09-20 13:10:56,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:10:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608628545] [2024-09-20 13:10:56,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608628545] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:10:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384364133] [2024-09-20 13:10:56,029 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 13:10:56,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:10:56,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:10:56,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:10:56,033 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 13:10:56,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-20 13:10:56,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:10:56,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-20 13:10:56,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:10:56,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-20 13:10:56,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-09-20 13:10:56,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-20 13:10:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2024-09-20 13:10:56,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:10:57,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384364133] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:10:57,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:10:57,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 25 [2024-09-20 13:10:57,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31286067] [2024-09-20 13:10:57,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 13:10:57,301 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 13:10:57,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:10:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 13:10:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-09-20 13:10:57,303 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 25 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 9 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-20 13:10:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:10:57,657 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2024-09-20 13:10:57,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-20 13:10:57,657 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 9 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) Word has length 137 [2024-09-20 13:10:57,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:10:57,659 INFO L225 Difference]: With dead ends: 56 [2024-09-20 13:10:57,659 INFO L226 Difference]: Without dead ends: 53 [2024-09-20 13:10:57,660 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 13:10:57,660 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:10:57,661 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 63 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:10:57,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-20 13:10:57,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-09-20 13:10:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 14 states have return successors, (18), 15 states have call predecessors, (18), 5 states have call successors, (18) [2024-09-20 13:10:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-09-20 13:10:57,670 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 137 [2024-09-20 13:10:57,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:10:57,671 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-09-20 13:10:57,671 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.75) internal successors, (35), 21 states have internal predecessors, (35), 9 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-20 13:10:57,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:57,671 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-09-20 13:10:57,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-20 13:10:57,673 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:10:57,673 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 18, 18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:10:57,687 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 13:10:57,874 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-20 13:10:57,875 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:10:57,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:10:57,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1126622992, now seen corresponding path program 1 times [2024-09-20 13:10:57,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:10:57,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551257033] [2024-09-20 13:10:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:10:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:10:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:58,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:10:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:58,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:10:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:58,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:58,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:58,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:58,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:58,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:58,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:58,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:58,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:10:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:10:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:10:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:10:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 1003 trivial. 0 not checked. [2024-09-20 13:10:59,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:10:59,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551257033] [2024-09-20 13:10:59,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551257033] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:10:59,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568131116] [2024-09-20 13:10:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:10:59,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:10:59,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:10:59,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:10:59,477 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 13:10:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:10:59,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-20 13:10:59,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:10:59,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-20 13:10:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2024-09-20 13:10:59,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:11:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2024-09-20 13:11:01,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568131116] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:11:01,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:11:01,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 18] total 37 [2024-09-20 13:11:01,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374239480] [2024-09-20 13:11:01,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:11:01,139 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-20 13:11:01,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:11:01,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-20 13:11:01,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1087, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 13:11:01,143 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 37 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 30 states have internal predecessors, (46), 15 states have call successors, (19), 8 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 15 states have call successors, (19) [2024-09-20 13:11:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:11:01,417 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2024-09-20 13:11:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 13:11:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 30 states have internal predecessors, (46), 15 states have call successors, (19), 8 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 15 states have call successors, (19) Word has length 137 [2024-09-20 13:11:01,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:11:01,419 INFO L225 Difference]: With dead ends: 50 [2024-09-20 13:11:01,419 INFO L226 Difference]: Without dead ends: 45 [2024-09-20 13:11:01,420 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 300 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=368, Invalid=1524, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 13:11:01,421 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:11:01,421 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 88 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:11:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-20 13:11:01,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-20 13:11:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 14 states have return successors, (16), 14 states have call predecessors, (16), 5 states have call successors, (16) [2024-09-20 13:11:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-20 13:11:01,432 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 137 [2024-09-20 13:11:01,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:11:01,432 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-20 13:11:01,432 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 30 states have internal predecessors, (46), 15 states have call successors, (19), 8 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 15 states have call successors, (19) [2024-09-20 13:11:01,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:11:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-20 13:11:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-09-20 13:11:01,435 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:11:01,435 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 30, 30, 30, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:11:01,449 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-20 13:11:01,639 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:11:01,639 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:11:01,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:11:01,639 INFO L85 PathProgramCache]: Analyzing trace with hash 842189810, now seen corresponding path program 6 times [2024-09-20 13:11:01,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:11:01,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439111919] [2024-09-20 13:11:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:11:01,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:11:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:02,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:11:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:02,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:11:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:03,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:03,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:03,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:03,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:03,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:03,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:03,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:03,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:04,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:04,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:04,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:04,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:04,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:04,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:04,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:04,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 2842 trivial. 0 not checked. [2024-09-20 13:11:05,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:11:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439111919] [2024-09-20 13:11:05,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439111919] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:11:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191721502] [2024-09-20 13:11:05,719 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 13:11:05,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:11:05,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:11:05,721 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:11:05,723 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 13:11:07,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-09-20 13:11:07,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:11:07,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 162 conjuncts are in the unsatisfiable core [2024-09-20 13:11:07,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:11:07,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-20 13:11:07,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-20 13:11:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 1122 proven. 101 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-09-20 13:11:07,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:11:08,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-09-20 13:11:08,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-09-20 13:11:09,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-09-20 13:11:09,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-09-20 13:11:10,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191721502] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:11:10,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:11:10,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 37 [2024-09-20 13:11:10,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719643728] [2024-09-20 13:11:10,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 13:11:10,196 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-20 13:11:10,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:11:10,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-20 13:11:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1548, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 13:11:10,199 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 37 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 35 states have internal predecessors, (55), 15 states have call successors, (19), 3 states have call predecessors, (19), 15 states have return successors, (23), 19 states have call predecessors, (23), 15 states have call successors, (23) [2024-09-20 13:11:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:11:11,529 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2024-09-20 13:11:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 13:11:11,530 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 35 states have internal predecessors, (55), 15 states have call successors, (19), 3 states have call predecessors, (19), 15 states have return successors, (23), 19 states have call predecessors, (23), 15 states have call successors, (23) Word has length 219 [2024-09-20 13:11:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:11:11,532 INFO L225 Difference]: With dead ends: 83 [2024-09-20 13:11:11,532 INFO L226 Difference]: Without dead ends: 79 [2024-09-20 13:11:11,534 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=627, Invalid=4775, Unknown=0, NotChecked=0, Total=5402 [2024-09-20 13:11:11,534 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 115 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 13:11:11,535 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 75 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 13:11:11,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-20 13:11:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2024-09-20 13:11:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 7 states have call successors, (7), 5 states have call predecessors, (7), 22 states have return successors, (38), 23 states have call predecessors, (38), 6 states have call successors, (38) [2024-09-20 13:11:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2024-09-20 13:11:11,551 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 219 [2024-09-20 13:11:11,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:11:11,551 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2024-09-20 13:11:11,551 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 35 states have internal predecessors, (55), 15 states have call successors, (19), 3 states have call predecessors, (19), 15 states have return successors, (23), 19 states have call predecessors, (23), 15 states have call successors, (23) [2024-09-20 13:11:11,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:11:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2024-09-20 13:11:11,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-09-20 13:11:11,554 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:11:11,554 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 33, 33, 33, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:11:11,576 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 13:11:11,755 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:11:11,755 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:11:11,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:11:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash 121509823, now seen corresponding path program 2 times [2024-09-20 13:11:11,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:11:11,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603657324] [2024-09-20 13:11:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:11:11,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:11:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:13,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:11:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:13,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:11:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:14,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:14,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:14,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:14,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:14,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:14,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:14,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:14,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:14,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 13:11:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 13:11:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 13:11:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3430 backedges. 65 proven. 849 refuted. 0 times theorem prover too weak. 2516 trivial. 0 not checked. [2024-09-20 13:11:15,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:11:15,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603657324] [2024-09-20 13:11:15,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603657324] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:11:15,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21032716] [2024-09-20 13:11:15,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:11:15,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:11:15,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:11:15,190 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:11:15,192 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 13:11:15,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:11:15,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:11:15,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-20 13:11:15,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:11:15,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-20 13:11:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3430 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 3395 trivial. 0 not checked. [2024-09-20 13:11:15,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:11:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3430 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 3340 trivial. 0 not checked. [2024-09-20 13:11:18,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21032716] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:11:18,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:11:18,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 26] total 51 [2024-09-20 13:11:18,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341593815] [2024-09-20 13:11:18,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:11:18,608 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-20 13:11:18,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:11:18,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-20 13:11:18,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2202, Unknown=0, NotChecked=0, Total=2550 [2024-09-20 13:11:18,610 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 51 states, 40 states have (on average 1.65) internal successors, (66), 42 states have internal predecessors, (66), 19 states have call successors, (26), 10 states have call predecessors, (26), 21 states have return successors, (32), 25 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-20 13:11:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:11:19,345 INFO L93 Difference]: Finished difference Result 123 states and 161 transitions. [2024-09-20 13:11:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-20 13:11:19,346 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 40 states have (on average 1.65) internal successors, (66), 42 states have internal predecessors, (66), 19 states have call successors, (26), 10 states have call predecessors, (26), 21 states have return successors, (32), 25 states have call predecessors, (32), 19 states have call successors, (32) Word has length 234 [2024-09-20 13:11:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:11:19,348 INFO L225 Difference]: With dead ends: 123 [2024-09-20 13:11:19,349 INFO L226 Difference]: Without dead ends: 50 [2024-09-20 13:11:19,351 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 525 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=668, Invalid=3754, Unknown=0, NotChecked=0, Total=4422 [2024-09-20 13:11:19,354 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 13:11:19,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 132 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 13:11:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-20 13:11:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-20 13:11:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 29 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 15 states have return successors, (16), 15 states have call predecessors, (16), 6 states have call successors, (16) [2024-09-20 13:11:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-09-20 13:11:19,374 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 234 [2024-09-20 13:11:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:11:19,375 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-09-20 13:11:19,376 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 40 states have (on average 1.65) internal successors, (66), 42 states have internal predecessors, (66), 19 states have call successors, (26), 10 states have call predecessors, (26), 21 states have return successors, (32), 25 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-20 13:11:19,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:11:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-09-20 13:11:19,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-20 13:11:19,379 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:11:19,379 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:11:19,398 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-20 13:11:19,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:11:19,580 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:11:19,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:11:19,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1830038685, now seen corresponding path program 3 times [2024-09-20 13:11:19,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:11:19,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934815569] [2024-09-20 13:11:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:11:19,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:11:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:20,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:11:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:20,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:11:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:20,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:20,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:20,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:20,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:20,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:20,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:20,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:20,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:21,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:11:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 13:11:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:11:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2024-09-20 13:11:22,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:11:22,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934815569] [2024-09-20 13:11:22,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934815569] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:11:22,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601042305] [2024-09-20 13:11:22,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:11:22,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:11:22,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:11:22,255 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:11:22,257 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 13:11:24,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 37 check-sat command(s) [2024-09-20 13:11:24,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:11:24,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-20 13:11:24,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:11:25,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-09-20 13:11:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1186 proven. 18 refuted. 0 times theorem prover too weak. 2999 trivial. 0 not checked. [2024-09-20 13:11:25,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:11:26,117 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-20 13:11:26,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-20 13:11:26,484 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-20 13:11:26,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-20 13:11:26,761 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-20 13:11:26,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-20 13:11:26,977 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-20 13:11:26,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-20 13:11:27,150 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-20 13:11:27,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-20 13:11:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601042305] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:11:27,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:11:27,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2024-09-20 13:11:27,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317125629] [2024-09-20 13:11:27,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 13:11:27,494 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-20 13:11:27,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:11:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-20 13:11:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-09-20 13:11:27,495 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-09-20 13:11:31,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-20 13:11:31,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:11:31,836 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-09-20 13:11:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 13:11:31,836 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 260 [2024-09-20 13:11:31,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:11:31,837 INFO L225 Difference]: With dead ends: 54 [2024-09-20 13:11:31,837 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:11:31,838 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2024-09-20 13:11:31,839 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:11:31,839 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 40 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 211 Invalid, 3 Unknown, 0 Unchecked, 4.1s Time] [2024-09-20 13:11:31,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:11:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:11:31,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:11:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:11:31,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 260 [2024-09-20 13:11:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:11:31,842 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:11:31,842 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-09-20 13:11:31,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:11:31,842 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:11:31,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:11:31,845 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 13:11:31,869 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-20 13:11:32,045 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 13:11:32,049 INFO L408 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1] [2024-09-20 13:11:32,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 13:11:39,668 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:11:39,680 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-20 13:11:39,680 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-20 13:11:39,681 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-20 13:11:39,682 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-20 13:11:39,682 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-20 13:11:39,682 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-20 13:11:39,682 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-20 13:11:39,682 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-20 13:11:39,682 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] [2024-09-20 13:11:39,683 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~a!base,]]] [2024-09-20 13:11:39,688 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-20 13:11:39,690 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: ArrayStoreExpression [2024-09-20 13:11:39,690 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-20 13:11:39,690 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-20 13:11:39,690 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-20 13:11:39,691 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-20 13:11:39,691 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-20 13:11:39,691 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-20 13:11:39,691 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-20 13:11:39,691 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-20 13:11:39,691 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-09-20 13:11:39,691 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-20 13:11:39,692 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-09-20 13:11:39,692 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-20 13:11:39,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:11:39 BoogieIcfgContainer [2024-09-20 13:11:39,692 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:11:39,693 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 13:11:39,693 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 13:11:39,693 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 13:11:39,694 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:10:38" (3/4) ... [2024-09-20 13:11:39,695 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 13:11:39,740 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 13:11:39,740 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 13:11:39,740 INFO L158 Benchmark]: Toolchain (without parser) took 62333.59ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 920.6MB). Free memory was 96.9MB in the beginning and 544.7MB in the end (delta: -447.8MB). Peak memory consumption was 474.8MB. Max. memory is 16.1GB. [2024-09-20 13:11:39,741 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 120.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:11:39,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.62ms. Allocated memory is still 167.8MB. Free memory was 96.8MB in the beginning and 85.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 13:11:39,741 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.58ms. Allocated memory is still 167.8MB. Free memory was 85.7MB in the beginning and 84.7MB in the end (delta: 963.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:11:39,741 INFO L158 Benchmark]: Boogie Preprocessor took 79.10ms. Allocated memory is still 167.8MB. Free memory was 84.7MB in the beginning and 137.4MB in the end (delta: -52.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2024-09-20 13:11:39,741 INFO L158 Benchmark]: RCFGBuilder took 321.72ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 137.3MB in the beginning and 212.2MB in the end (delta: -74.9MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2024-09-20 13:11:39,742 INFO L158 Benchmark]: TraceAbstraction took 61641.31ms. Allocated memory was 251.7MB in the beginning and 1.1GB in the end (delta: 836.8MB). Free memory was 211.1MB in the beginning and 546.8MB in the end (delta: -335.7MB). Peak memory consumption was 501.1MB. Max. memory is 16.1GB. [2024-09-20 13:11:39,742 INFO L158 Benchmark]: Witness Printer took 47.15ms. Allocated memory is still 1.1GB. Free memory was 546.8MB in the beginning and 544.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:11:39,743 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 120.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.62ms. Allocated memory is still 167.8MB. Free memory was 96.8MB in the beginning and 85.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.58ms. Allocated memory is still 167.8MB. Free memory was 85.7MB in the beginning and 84.7MB in the end (delta: 963.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 79.10ms. Allocated memory is still 167.8MB. Free memory was 84.7MB in the beginning and 137.4MB in the end (delta: -52.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * RCFGBuilder took 321.72ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 137.3MB in the beginning and 212.2MB in the end (delta: -74.9MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * TraceAbstraction took 61641.31ms. Allocated memory was 251.7MB in the beginning and 1.1GB in the end (delta: 836.8MB). Free memory was 211.1MB in the beginning and 546.8MB in the end (delta: -335.7MB). Peak memory consumption was 501.1MB. Max. memory is 16.1GB. * Witness Printer took 47.15ms. Allocated memory is still 1.1GB. Free memory was 546.8MB in the beginning and 544.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: ArrayStoreExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.9s, OverallIterations: 11, TraceHistogramMax: 42, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 462 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 458 mSDsluCounter, 1070 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 920 mSDsCounter, 353 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3389 IncrementalHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 353 mSolverCounterUnsat, 150 mSDtfsCounter, 3389 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2721 GetRequests, 2292 SyntacticMatches, 12 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5912 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=9, InterpolantAutomatonStates: 180, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 36.9s InterpolantComputationTime, 2581 NumberOfCodeBlocks, 2512 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 3210 ConstructedInterpolants, 34 QuantifiedInterpolants, 11941 SizeOfPredicates, 115 NumberOfNonLiveVariables, 5099 ConjunctsInSsa, 614 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 30568/32826 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-20 13:11:39,773 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE